Joint for metallic conduits.



A. G. ELVIN.

JOINT FOR METALLIC GoNDUITs. APPLIGATION FILED NOV. 17, 1910.'

Patented. July y25, 1911.

. To all iff/tom it' may concern:

r 'ollowi s' is a speciiication.

entran errar-ns earns' ALBERT G. ELVN, F EAST ORA-NGE, NEW' JERSEY.

JOINT FJZB,y METALLIC CONDUITS.

1, 191D, serieu No.

i'e it known that l, ALBERT G. Enviar, ot t range, in the county oit' Essex, and tats or". New Jersey, have invented a certain new. and useful-improvement in Joints tor "allie, Conduite, of which'iniprovement .My present invention relates to joints tor metallic conduits of .the-type set Yforth in an 'fully' Fie. l,

- lpacking material.

'1. Thea 'func to provide, in a metallic conduit ot the typeA ao .movement oit application'. torlfetters PatentI tiled by ine Vunder date 'otil'uly- 1,'.1910,Ser. No. 569,853,

which application thisiis a division, an Les object is to providefa joint desirably l ated. tor the' operation of metallic confciaimedis hereinatter j, drawings: VFigure l ,is a yeitical longitueinai central section th'rougliajoint vtor ine/taliic.conduits, illustrating anV embodiment 'of 'my invention; l'ig, 2, asimilar section, taken at right angles l? l.; Fig. 3, a section, .similar to l iliustrating a structural modification ot the joint bodygfand, Fig. 4, alongitu dinal central'sectionv through the jointsleeve, detached.

in the .,aeeonipa' vino',

.tion ot my present invention isset 'jorth in'my application, Ser. No. 569,853 aforesaid, a double joint which will permit 'two connected pipe sections' about aves at anglesvone to the other, without 'kage ot fluid or undue 'friction of the arulated members. To this end, a pipe section, 3x, which maybe either straight or in elbojo' form, is connected withanother pipe section, 7, through the intermediation ot' ajoint, comprising as essential elements, a1 sleeve, Si, rigidly connected to the pipe section, 3a, joint body, 2, connected to the sleeve, l, with the capacity of movement about the axis thereoi'and a joint sleeve, 6, 7hich is connected tothe joint body, with the capacity oi movement about` the axis thereof, said axis being at right angles to the axis o t the sleeva, 3.and which is rigidly connected to the pipe' section, '2'.

l' Referring iirst to Figs. l,2, and't,l the sleeve, 3,; is enlarged in diameter beyond the pipe section, 'torprovide a tapered pe ripheral seat, 'tor a A formed on the topo-t the joint termal diameter such asneck, 2t, isf body, 2, in

Specification of Letters Patent.

` in position .in the jointrfbody.

`andis held in position is fitted between gasket, a, otsuitable tubularl extension or Patented .nay e5, i911.

569,853. Divided and ein application inea november 17,` 1910. sembro. 592,808.

l to enable it to 'lit neatly around the sleeve,

3, and around the gasket, 1l, of said sleeve.` rlhe neck, 2, is 'externally threaded to en` gage a nut, 5, which lits over, and-bears on, the top of the gasket, 4, and fits freely around the sleeve, 3, above the neck, Qa. The nut, 5, may be locked in position, when brought to a proper bearing on the neck, 2a, by a -split pin, 5, passing through a lug on the neck, 2a. The jointbod and the members connected thereto,.are held by their own gravity'to a bearing on the gasket, Ll, and the joint body is free to turn about the common axis of the Vpipe section, 3a, and the Vieck, 2, of the joint body.

`The -lower portion of the joint body, 7'2,

1 .is bored out, at right angles to the axiswof the neck, 2a, to receive a joint sleeve, 6,-which is'inserted through an opening .in one end of the joint body, closed by a removable cap, 2b, and-,is fitted to turn freely in the bore of the joint body. l`The pipe section,- 7, is

passed 'through a transverse sectoral slot, 2,

`inthe joint. bodjgfand screwed into the joint insertion ofA the latter There is thus providedV a double joint, asthe pipe section, 7is aiiorded the capacity of two motions, lone being about the axis otl the fixed sleeve, 3, andthe other through the slot, 2, about4 an axis Aat right angles thereto, z'. e., the

G, as indisleeve, 6, after the laxis of the movable joint sleeve, ecated in'dotted lines in 2..

ln order to minimize end friction, the joint sleeve, @,preterably abuts against the closed interposition ot ball bearings, 6', carried in a ball race', 6, which tits ona central hub, 6c, on the adjacent end of the joint sleeve, 6, by riveting over the A packing gasket, 6d,

theV

end ofthe. hub, 6C.

the 'joint sleeve,

joint body, 2,' at the opposite end oft end of the joint body, 2', through the l sleeve, with a follower ring, 6e, on its outer side, and a' spring, 61, which abuts against the follower ring and the cap, 2b, holds the sleeve solidly in the joint body, when running' withoutpressure, and prevents rattling and, undue wear. The ball race acts as a thrust bearing and eliminates about per cent. of the friction which would be encountered with plain bearings.

3 illustrates a structural modification in the disposition of the packing gas-l ket, 4,-relatively tothe fixed sleeve, 3; The

gasket, is, this case, placed below., in-

stead of above, va shoulderon tlie'sleeve, 3,

and is held in position by a follower ring, 4, and spring, Lieb.V The'nu, engagesran 'ex ternal thread on theineck, Q, of the-joint" body, `as in the'instan eirst described,"but

bearsI on the'top ofl a s oulder'on the sleeve,

3,- instead of on thegasketi.v Under this construction, ythe gasket may be removed and another inserted when desired, Without detaching the sleeve, 43,- from the pipe sec-A tion, 3a, as would ,be' necessary -vvhen` the construction rst described'is employed.

I .claim as luy-invention and desire to secure my LettersPatent':

l. In a joint 1:for metallicl conduits, -the combination` ffa sleeve adapted to be rigidly connected to a pipe section, a joint body fitted on and adapted to rotate abont the axis of. said sleeve,` a nut engaging an exter-` nal thread on the joint body and' bearing on the sleeve, a packing gasket interposed loe-- tween the sleeve4 and nut, and fittinga ta `.axis of9sad `sleeve, and having'a portion Copies'of this patent'may be obtained for five cents each, by addressing," the Commissioner o f Patents. i

with 'an axis at right angles' thereto, saidAIA inthe joint body andradapted'to rotate 1 'about the axis thereof and 'to be .connected With-a'pipe" section through the transverse sectoral slot ofthe joint body.

. 3. A joint' sleeve lforjointed metallic ci-jV duits, having a body which is clod 'at one end a'nd vbored out toireceive a joint sleeve,

i a neck projecting at right'rangles to its body,

said vneck being bored out to tit over a pipe Y line section sleeve and exteriorly threaded for a mit, and a transverse sectoral1slot formed in its body, and a joint sleeve having. 'an ,imperforate Wall' and a-n openuend and:

fitted inthe joint body and adapted to rotate about vthe axis thereof and-' t be connected with a pipe sectionthroilgh the transverse sectoral slot vot the joint body.

4. A jointjsleeve for jointed` metallic conduits, having a cylindrical body which i is closed at olie end and open at'the other,

Yiinished 'exteriorlv to .fit Within a joint ybody, provided vvith avcentralhub project' ingffrorn its c losedend to receive a ball racev and with a seatadjoining its open 4end for a packing gasket, and having an in Lally threaded lateral opening'. for the attachlment oila pipe section. 1

y .ALBERT Gr. ELVIN.

Witnesses:l Y

F. W. MARTIN,-

Washington; D. 0.75 A 

